NBC has renewed its under-the-radar fantasy show Grimm for a second season, according to The Hollywood Reporter. The show has gained a sizable audience and critical acclaim during its brief run, even though it airs during the dreaded Friday night time slot. Grimm's biggest selling point is that it attracts a 1.5 rating in the coveted 18-49 age demographic, and 4.8 million viewers overall, which is solid in a slot that doesn't usually  lend itself to monster numbers.

Created by Buffy the Vampire Slayer writers David Greenwalt and Jim Kouf, Grimm has even managed to hold its own against competition from Fox's Fringe and The CW's Supernatural. The show is often compared to ABC's fairy tale-centric show Once Upon a Time, yet in a rare twist, both shows have managed to impress in the ratings so far.

[via The Hollywood Reporter]